E34 Touring sunroof questions

I recently bought a 1992 525i Touring and there appears to be some things not quite right about the sunroof.

#1: when the front sunroof is open, I can see what looks to be an insulating pad resting loosely between the exterior and interior parts of the sunroof:

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Is this something that has come loose, or is it something a previous owner may have installed themselves?

#2: while the front sunroof panel opens fully, the rear sunroof panel doesn't come forward as far as I would expect. Does this picture look normal?

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#3: during the exercise of opening both roofs, I ended up with a long mark on the cabin ceiling about 3 cm from the sunroof split. Is there any advice to be given on how to keep this from happening again? (the lower line in the photo is the seam between the panels; the upper line is a dirty mark).

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Overall, the opening of the sunroof is sluggish--I don't know whether it is because of the motors showing their age or possible the resistance of the loose pad.

Any suggestions or advice before I go to have this repaired would be appreciated.

Thanks!

-- Mike Poplawski Victoria BC Canada

Based on past experience, I'd ensure both sunroofs are fully closed and leave them closed for ever after. I have worked on many E34 Tourings and

*every* single one with the double sunroof option had problems at some time or other. Either they wouldn't open at all (best case), open slightly and no further but still close (not too bad), or open and not close at all (very bad indeed). Even main dealers have to get specialists in to work on these sunroof 'cassettes'. They without a doubt a complete and utter bastard to even attempt a fix on. the first thing you have to do is remove the complete roof liner. These never go back cleanly. They always look as if you've glued your washing to the insdie of the roof. Assuming you have also got aircon, my advice would be to leave *well* alone.